Process of forming crosslinked copolymer film, crosslinked copolymer film formed thereby, and water purification membrane

Abstract

Azidoaryl-substituted cyclooctene monomers and synthesized and used in the preparation of various copolymers. Among these copolymers are those prepared from ring-opening metathesis polymerization of cyclooctene, polyethylene glycol-substituted cyclooctene, and azidoaryl-substituted cyclooctene. These copolymers are useful in the formation of crosslinked films that reduce fouling of water purification membranes.

1. A water purification membrane comprising:
 a crosslinked polymer film prepared by a process comprising
 forming a film comprising a copolymer that is the product of polymerization of monomers comprising an azidoaryl-substituted cyclooctene; and 
 exposing the film to radiation effective to photolyze the azido group and thereby crosslink the copolymer film; and 
 
 a membrane comprising a polymer selected from the group consisting of poly(vinylidene fluoride)s, polyamides, and polysulfones. 
 
     
     
       2. The water purification membrane of  claim 1 , wherein the crosslinked polymer film is covalently bound to the membrane comprising a polymer selected from the group consisting of poly(vinylidene fluoride)s, polyamides, and polysulfones.